I've been using the new .raw() method as follows:

Joi.date().options({ convert: true }).raw().iso()

which works correctly and the validator throws the following error on invalid input:

value must be a valid ISO 8601 date

but strangely:

Joi.date().iso().options({ convert: true }).raw()

throws the following error on invalid input:

value must be a number of milliseconds or valid date string

It seems that .options() and/or .raw() is causing the underlying flags._format to be lost.
Is this the desired behavior?

Thanks in advance.